
U&RaTT - these are road tracks, tram tracks, and trolleybus tracks that can be used with some NRT features. These kits contain a wide variety of types, from dirt to highway. It is supported by all climatic conditions and even by a right-hand and left-hand driver. Trolleybus and tram tracks will only be available when supported vehicles.
U&RaTT: Mini - these kits belong to U&RaTT. Road (including trolleybus and tram) types, which are minimized to simplify the gameplay.
U&RaTT: Lighting - these are additional road types with lighting: highway, expressways and urban. Newgrf "URaTT_Lighting.grf" (version 2).

U&ReRMM - simplified railway sets with the new graphics. Railway types is the default: RAIL, ELRL, MONO and MGLV...
U&ReRMM 2 - this is a continuation from U&ReRMM, not only new sprites with graphics, but also add recombined sprites, the new types of rail. Railway types: standard rail, electrified rail, narrow gauge, 3rd rail, monorail and maglev.
Some train set supported: 2сс Train NML, Iron Horse 2 (recommended version 2.26.0 and later), NARS, UKRS 2, Dutch Trainset 2.1.0, Japan Set 3: Train*, also French Trains Set (Narrow Gauge). This function works correctly for standard and supported track sets.
Japan Set 3: Train* : disable "enable railroad tracks" - RECOMMENDS
U&ReRMM 2: Mini - These sets belong to U&ReRMM 2. All railway tracks are kept to a minimum and remove all speed limits to simplify the gameplay. Second-hand (standardized rail-type scheme) railway sets are still compatible.
U&Bridges - Replaces the original graphics with new ones. These bridges must be connected to road and railway tracks
U&Bridges param speed limit - Choose the speeds for each bridge. This Newgrf should be below after U&Bridge (or other bridge set)

Please note road sets is not a final project, due to the development of the NRT. They have no tunnels and the rest. Follow the news and forum.
U&RaTT, UReRMM 2 and U&Bridges requires OpenTTD 1.10 or later to function.
Available to download through the online content BaNaNas:
U&RaTT 0.7
U&RaTT: Mini v2
U&ReRMM
U&ReRMM 2 1.4a
U&ReRMM 2: Mini
U&Bridges 1.5
U&Bridges param speed limit
I think, probably. You liked it. Enjoy
Credit
U&RaTT, U&RaTT: Mini, UReRMM is a license : GPL 3
The exception is UReRMM 2, U&ReRMM 2: mini and U&Bridges, which is licensed under CC BY-NC-SA 3.0.